function create_table_row(arr_content, row_num) {
    var table = document.getElementById('table_dataset_list');
    var tbody = table.children[1];
    var tr = document.createElement('tr');
    for (var i = 0; i < arr_content.length; i++) {
        var td = document.createElement('td');
        var span = document.createElement('span');
        if (i != arr_content.length - 1)
            span.appendChild(document.createTextNode(arr_content[i]));
        else {
            var a = document.createElement("a");
            var b;
            if (arr_content[i][0] === '#') {
                b = document.createTextNode("无法下载");
                a.setAttribute("onclick", "alert('文件不存在或位置变更!')");
                a.appendChild(b);
            } else {
                a.setAttribute("href", "ATTRMaterialDatabase/dataset_download/dataset_download?dataset_name=" + arr_content[i - 3]);
                b = document.createTextNode("下载");
                a.appendChild(b);
            }
            span.appendChild(a);
        }
        td.appendChild(span);
        td.style.width = "20.175%";
        td.id = "search_result-" + row_num + "-" + i;
        tr.appendChild(td);
    }
    tr.id = "dataset-" + row_num;
    tbody.appendChild(tr);

}